yes
and no, if I had to take a wild guess, Evisc is probably the best unstacked WS atm?
Gonna try answering this, correct if i do some wrong step.
Suposing ws at 1000 (higher than 1000 it will favor rudras anyway). Rudra with moonshade, evis with gorget/belt. Adopting BG models for evis. Izhiikoh mainhand, total dex in gear estimated to be 300. Att/acc capped.
Rudra:
D= (108+19+0,8*300)*(5+1,47+1)*2,25 = 6168
Evis minimum (no crit or multi attack hits):
Dmin= (108+19+0,5*300)*(1,25+0,2)*(5+1)*2,25 = 5422
Stopping here, we could say that a weak evis will be short bellow a rudra at 1000 tp. Now suposing first hit to crit (supose total of 25% crit dmg):
D1crit= (108+19+0,5*300)*(1,25+0,2)*(5)*2,25 + (108+19+0,5*300)*(1,25+0,2)*3,25*1,25 = 6150
So, with just one crit, you have evis tied to rudra. Given that we have 6 possible hits to crit, plus a chance of multi hit, overall evis will be stronger than rudras if you have at least higher than 17% of crit rate+da/ta/qa in ws set (because it means at least one crit or multi attack will happen after all 6 hits).
Now some things to consider when choosing what ws to use at 1000 tp. First, as you have 6 chance to crit or multi hit, increasing your total dmg above rudra, you also have 6 chances to miss a hit, so evis can whiter when fighting a high lv mob with high evasion. Rudra can also miss, and with worse result than missing an evis, but eyeballing i think rudra has some acc bonus, though i cant prove it because i never tested it.
Second, consider evis has gravitation/transifixion while rudra is darkness/distortion, that means, rudra has 2 chances to create lv3 skillchain, the strongest, so in a party situation, overall dmg can be lower due to loss of double darkness possibility.
Finally, third, i would strongly advise someone to recheck if BG info about ftp transfering to all hits in evis to be true. The references there do not apoint that testing, and one cant take blindly the info in BG without appropriate references. I say that because I tested Chant du Cygne, and personally i didnt see the final output like it would be supose to be if BG info was correct (ftp 2,25 transfering across all hits).